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这些年,各种升学复习资料大量传播,在方便教学的同时也造成负面的影响。一些错题被反复复制,影响面较大。下面列举传播最广的四种典型错题,供同行们参考。 1 把圆盘衍射与圆孔衍射混为一谈,认为圆孔衍射的图样中心一定是亮点(或一定是暗点)。在一些地区的高考模拟试卷上,常出现下面的错题(或其改型) 题1:用单色光通过小圆盘与小圆孔做衍射实验时,在光屏上得到衍射图形,它们的特点是:A.用小圆盘时中央是暗的,用小圆孔时中央是亮的;B.用小圆盘时中央是亮的,用小圆孔时中央是暗的;
In recent years, various studies have been widely disseminated, which has also had a negative impact on teaching convenience. Some of the wrong questions were repeatedly copied and the influence was larger. The following list of the most widely spread four kinds of typical wrong questions for the reference of their counterparts. 1 Confuse the disc diffraction with the circular hole diffraction, and think that the center of the pattern of circular aperture diffraction must be a bright spot (or must be a dark spot). In some areas of the college entrance examination simulation test paper, the following incorrect questions (or their modifications) often appear: Question 1: When monochromatic light is used for diffraction experiments through small disks and small round holes, diffraction patterns are obtained on the screen, and they are The characteristics are: A. When the small disc is used, the center is dark, and when the small round hole is used, the center is bright; B. When using a small disc, the center is bright; when using a small round hole, the center is dark;